TC-25.000MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TC-25.000MBD-T is a 25 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output, Enable/Disable function, and is housed in a 4-SMD, No Lead package. The part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Frequency	25 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±25ppm
Operating Temperature Range	-40°C ~ 85°C
Package / Case	4-SMD, No Lead
Mounting Type	Surface Mount
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the TC-25.000MBD-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Frequency: 25 MHz
Output Type: CMOS
Supply Voltage: 3.3V
Function: Enable/Disable
Frequency Stability: ±25ppm
Operating Temperature Range: -40°C ~ 85°C
Package / Case: 4-SMD, No Lead
Mounting Type: Surface Mount
Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed meet these mandatory parameters. Variations in supply current, height, base resonator type (MEMS vs. Crystal), and product status are secondary considerations that do not prevent functional substitution.

Parameter Comparison

Part Number	Manufacturer	Frequency	Output	Supply Voltage	Function	Frequency Stability	Operating Temperature	Package	Size (mm)	Height (mm)	Current - Supply (Max)	Product Status
TC-25.000MBD-T	TXC CORPORATION	25 MHz	CMOS	3.3V	Enable/Disable	±25ppm	-40°C ~ 85°C	4-SMD, No Lead	3.20 x 2.50	0.80	25mA	Obsolete
7X-25.000MBD-T	TXC CORPORATION	25 MHz	CMOS	3.3V	Enable/Disable	±25ppm	-40°C ~ 85°C	4-SMD, No Lead	3.20 x 2.50	1.10	15mA	Active
7X25070016	TXC CORPORATION	25 MHz	CMOS	3.3V	Enable/Disable	±25ppm	-40°C ~ 85°C	4-SMD, No Lead	3.20 x 2.50	1.10	Not Specified	Active
ASE-25.000MHZ-L-R-T	Abracon LLC	25 MHz	CMOS	3.3V	Enable/Disable	±25ppm	-40°C ~ 85°C	4-SMD, No Lead	3.20 x 2.50	1.20	13mA	Active
FK2500094Q	Diodes Incorporated	25 MHz	CMOS	3.3V	Enable/Disable	±25ppm	-40°C ~ 85°C	4-SMD, No Lead	3.20 x 2.50	1.15	10mA	Active
SXO32C3C481-25.000M	Suntsu Electronics, Inc.	25 MHz	CMOS	3.3V	Enable/Disable	±25ppm	-40°C ~ 85°C	4-SMD, No Lead	3.20 x 2.50	1.20	10mA	Active

Engineering Selection Recommendations

Primary Substitutes (Same Manufacturer - TXC CORPORATION):

The 7X-25.000MBD-T and 7X25070016 are direct TXC CORPORATION alternatives with Active product status. Both maintain identical electrical specifications and physical footprint compatibility. The 7X-25.000MBD-T offers Tape & Reel packaging and RoHS compliance. The 7X25070016 provides equivalent performance with RoHS and REACH compliance. These options minimize supply chain risk through manufacturer continuity.

Secondary Substitutes (Alternative Manufacturers):

The ASE-25.000MHZ-L-R-T (Abracon LLC), FK2500094Q (Diodes Incorporated), and SXO32C3C481-25.000M (Suntsu Electronics, Inc.) are functionally equivalent alternatives. All three maintain Active product status and full compliance certifications. The FK2500094Q carries AEC-Q200 automotive qualification, suitable for automotive and high-reliability applications. The ASE-25.000MHZ-L-R-T and SXO32C3C481-25.000M provide high inventory availability and ROHS3 compliance.

Compliance Considerations:

All substitute parts are RoHS3 compliant and REACH unaffected. The FK2500094Q includes AEC-Q200 qualification for automotive-grade applications. Selection should prioritize product status (Active preferred over Obsolete) and compliance requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can the TC-25.000MBD-T be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts match the mandatory electrical and mechanical parameters: 25 MHz frequency, CMOS output, 3.3V supply, Enable/Disable function, ±25ppm stability, -40°C to 85°C operating range, and 4-SMD No Lead package with 3.20mm x 2.50mm footprint. Physical height variations (0.80mm to 1.20mm) do not affect PCB layout compatibility for standard surface mount applications.

Q: What is the difference between MEMS and Crystal-based oscillators in this comparison?

A: The TC-25.000MBD-T uses MEMS resonator technology, while substitute parts 7X-25.000MBD-T, 7X25070016, ASE-25.000MHZ-L-R-T, FK2500094Q, and SXO32C3C481-25.000M use crystal resonators. Both technologies deliver identical electrical performance within the specified parameters. Crystal-based alternatives are widely available and carry Active product status, making them preferred for new designs.

Q: Why do supply current specifications vary among substitutes?

A: Supply current variations (10mA to 25mA maximum) reflect different circuit implementations and manufacturing processes. All values remain within acceptable operating ranges for 3.3V CMOS oscillators. Lower current consumption in newer designs (FK2500094Q and SXO32C3C481-25.000M at 10mA) may provide power efficiency benefits in battery-powered applications.

Q: Are there packaging differences I should consider?

A: The TC-25.000MBD-T is listed without specified packaging. Substitute parts are available in Tape & Reel (7X-25.000MBD-T, ASE-25.000MHZ-L-R-T, FK2500094Q) and Bulk (SXO32C3C481-25.000M) formats. Tape & Reel packaging is standard for automated assembly. Packaging selection depends on production volume and assembly process requirements.

Q: Which substitute offers the best compliance for automotive applications?

A: The FK2500094Q carries AEC-Q200 automotive qualification, making it the specified choice for automotive-grade designs. All other substitutes maintain RoHS3 and REACH compliance suitable for industrial and commercial applications.

Q: Is inventory availability a factor in substitute selection?

A: Yes. Current inventory levels vary: ASE-25.000MHZ-L-R-T (47,218 pcs), SXO32C3C481-25.000M (18,239 pcs), 7X-25.000MBD-T (1,052 pcs), FK2500094Q (4,438 pcs), and 7X25070016 (882 pcs). Higher inventory availability reduces lead time risk for high-volume production.

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